41 lines
1.2 KiB
Swift
41 lines
1.2 KiB
Swift
//
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// SwiftDate
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// Parse, validate, manipulate, and display dates, time and timezones in Swift
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//
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// Created by Daniele Margutti
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// - Web: https://www.danielemargutti.com
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// - Twitter: https://twitter.com/danielemargutti
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// - Mail: hello@danielemargutti.com
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//
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// Copyright © 2019 Daniele Margutti. Licensed under MIT License.
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//
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import Foundation
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/// Subtracts two dates and returns the relative components from `lhs` to `rhs`.
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/// Follows this mathematical pattern:
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/// let difference = lhs - rhs
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/// rhs + difference = lhs
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public func - (lhs: Date, rhs: Date) -> DateComponents {
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return SwiftDate.defaultRegion.calendar.dateComponents(DateComponents.allComponentsSet, from: rhs, to: lhs)
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}
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/// Adds date components to a date and returns a new date.
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public func + (lhs: Date, rhs: DateComponents) -> Date {
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return rhs.from(lhs)!
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}
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/// Adds date components to a date and returns a new date.
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public func + (lhs: DateComponents, rhs: Date) -> Date {
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return (rhs + lhs)
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}
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/// Subtracts date components from a date and returns a new date.
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public func - (lhs: Date, rhs: DateComponents) -> Date {
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return (lhs + (-rhs))
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}
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public func + (lhs: Date, rhs: TimeInterval) -> Date {
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return lhs.addingTimeInterval(rhs)
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}
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